US5443091A - Non-return valve with improved line connecting mechanism - Google Patents

Non-return valve with improved line connecting mechanism Download PDF

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Publication number
US5443091A
US5443091A US08/243,766 US24376694A US5443091A US 5443091 A US5443091 A US 5443091A US 24376694 A US24376694 A US 24376694A US 5443091 A US5443091 A US 5443091A
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US
United States
Prior art keywords
passage
valve
distributor
gripping element
medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US08/243,766
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English (en)
Inventor
Karl Rodemer
Zdravko Paluncic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF Lubrication Systems Germany GmbH
Original Assignee
Lincoln GmbH
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Filing date
Publication date
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Assigned to LINCOLN GMBH reassignment LINCOLN GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PALUNCIC, ZDRAVKO, RODEMER, KARL
Application granted granted Critical
Publication of US5443091A publication Critical patent/US5443091A/en
Assigned to LINCOLN GMBH & CO. KG reassignment LINCOLN GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EUROPENTAIR VERMOGENSVERWALTUNG GMBH, FORMERY KNOWN AS LINCOLN GMBH
Assigned to EUROPENTAIR GMBH reassignment EUROPENTAIR GMBH MERGER/CHANGE OF NAME Assignors: LINCOLN GMBH
Assigned to LINCOLN GMBH & CO. KG reassignment LINCOLN GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EUROPENTAIR GMBH
Assigned to LINCOLN PARTICIPATION GMBH reassignment LINCOLN PARTICIPATION GMBH DIVESTITURE Assignors: LINCOLN GMBH & CO. KG
Assigned to LINCOLN GMBH reassignment LINCOLN GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: LINCOLN PARTICIPATION GMBH
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/38—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of two pipe-end fittings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7854—In couplings for coaxial conduits, e.g., drill pipe check valves
    • Y10T137/7857—Valve seat clamped between coupling elements

Definitions

  • the present invention relates to a non-return valve, especially such a non-return valve for use in a lubricant distributor of the progressive distributor type, and including a valve body that can be attached, for example by threading, into a medium outlet of a distributor body, particularly into a lubricant outlet of a distributor block.
  • the present invention further is related to such a non-return valve of the type wherein the valve body has therethrough a passage or channel through which medium, for example lubricant, is to flow between inlet and outlet ends of the passage.
  • the present invention further relates to such a non-return valve having a valve closing element that is pressed by a restoring spring against a valve seat provided in the passage through the valve body.
  • the present invention further relates to such a non-return valve having a connecting mechanism by which it is possible to connect an outlet line, for example a lubricant outlet line, to the valve body.
  • Non-return valves are employed, for example, with progressive distributors in order to guarantee reliable and flawless conveyance of lubricant to other distributors or to lubricating points. It is conventional to connect lubricant lines to such non-return valves by means of fittings with cutting rings. The manufacture of such connections is relatively time consuming and expensive.
  • the connecting mechanism of the non-return valve includes a gripping element, at least an inner end of which is spreadable outwardly upon insertion of a medium line into the gripping element.
  • the gripping element extends into the medium outlet end of the passage through the valve body with the inner end of the gripping element being located at a position beyond a constricted portion of the passage through the valve body.
  • the gripping element essentially is cylindrical in configuration and has formed therein longitudinal slots that extend from the inner end of the cylindrical gripping element. Therefore, when the medium line to be connected is inserted or plugged into the gripping element, the inner end of the gripping element is allowed to spread apart uniformly in all directions to all sides due to the provision of the longitudinal slots. The medium line no longer can be pulled from the gripping element without effort, because the spread apart inner end of the gripping element no longer can be pulled outwardly past the constricted portion of the passage. To facilitate this arresting or retaining effect, the inner end of the gripping element can be flared or angled outwardly, at least region-by-region.
  • the passage may include a conical portion extending from the constricted portion in a direction toward the medium inlet end of the passage and defined by a conical surface inclined outwardly in such direction.
  • the inner end of the gripping element confronts such conical surface.
  • the conical portion of the passage at an end thereof remote from the constricted portion of the passage, can join a circumferential groove portion of the passage, for example formed in the valve body.
  • a sealing ring is positioned in this circumferential portion of the passage and thereby improves the seal between the connecting medium line with respect to the valve body.
  • the holding element preferably has a generally cylindrical configuration and includes a tapered projection and an outwardly flared or conical end portion.
  • the holding element includes a tapered projection accommodating thereabout the spring, and the outwardly flared end portion of the holding element is directed away from the spring and is braced against the valve body. This bracing can be improved by bracing such tapered end in a groove portion of the passage formed in the valve body.
  • the valve body carries undetachably on an inlet side attachment or projection thereof a conical clamping ring to be employed for the purpose of sealing the medium outlet.
  • the projection or attachment has a recess
  • the clamping ring fits within the recess
  • a collar of the attachment or projection closes an end of the recess and maintains the clamping ring therein.
  • FIG. 1 is an elevation view, partially in section, of a non-return valve in accordance with the present invention.
  • FIG. 2 is a sectional view of a distributor block having two medium outlets, into one of which is installed a non-return valve according to the present invention.
  • FIG. 1 Illustrated in FIG. 1 is an embodiment of a non-return valve in accordance with the present invention.
  • the non-return valve includes a valve body 2 having extending therethrough a longitudinal passage or channel 8 for the flow therethrough of a medium, for example a lubricant.
  • the passage 8 has a medium inlet end, i.e. the lower end shown in FIG. 1, and a medium outlet end, i.e. the upper end shown in FIG. 1.
  • the contour of passage 8 varies between the inlet and outlet ends. Particularly, the passage 8 has therein a valve seat 9 and spaced upwardly therefrom as shown in FIG. 1 is a constricted portion 13.
  • a holding element 4 positions spring 5 such that spring 5 is braced between valve closing element 6 and holding element 4.
  • holding element 4 is generally cylindrical or tube shaped and includes a tapered projection 18 against which abuts the outlet end of spring 5.
  • Holding element 4 further includes at the outlet end thereof an outwardly expanded or flared end 19 that is braced in a groove 20 of passage 8 that is formed in valve body 2. This retains holding element 4 in position, with spring 5 being braced against holding element 4 and urging valve closing element 6 toward valve seat 9.
  • valve body 2 of the non-return valve is connectable, for example by screw threads 24 thereof, to a medium outlet 11 of a distributor block 12 such that a medium can be supplied to the medium inlet end of passage 8.
  • distributor block 12 is part of a lubricant distributor of the progressive distributor type wherein block 12 includes plural lubricant outlets 11. Pressure of lubricant within the respective medium outlet is supplied to passage 8, thereby moving valve closing element 6 away from valve seat 9 such that the lubricant then can flow to the medium outlet end of the passage 8.
  • the non-return valve includes a connecting mechanism for connecting such medium line (not shown) to the non-return valve.
  • such connecting mechanism is in the form of a hollow cylindrical gripping element 1 having an outer circumferential flange 25 guided in the outlet end of the passage 8.
  • the gripping element 1 further has an inner end 10 tapered outwardly relative to flange 25 and located at a position inwardly beyond constricted portion 13.
  • Inner end 10 is tapered or flared outwardly toward the inlet end of passage 8.
  • At least the inner end of the gripping element 1 is of a construction such that it is spreadable outwardly upon insertion of the medium line into the gripping element.
  • the entire axial length of the gripping element 1, except for an outer end head portion thereof, is provided with longitudinally extending slots 15. Therefore, when a medium line is inserted or plugged into gripping element 1, the slotted portion of the gripping element 1 can spread apart outwardly in all directions. This will occur at least at the inlet end of the gripping element.
  • the outwardly angled inner end 10 is enlarged such that it cannot be withdrawn outwardly past constricted portion 13. That is, any attempt to pull the medium line outwardly will similarly result in an attempted outward movement of gripping element 1.
  • constricted portion 13 This will prevented by constricted portion 13, with the result that the gripping element 1 further clamps the medium line.
  • This feature and effect are facilitated by the further formation in passage 8 of a conical portion extending from constricted portion 13 in a direction toward the medium inlet end of the passage.
  • Such conical portion is defined by a conical surface 16 inclined outwardly in the direction toward the medium inlet end of the passage.
  • the outer surface of the outwardly flared inlet end 10 of the gripping element 1 rests against conical surface 16.
  • the conical portion defined by conical surface 16, on the side thereof remote from constricted portion 13, joins a circumferential groove portion 17 of the passage 8.
  • a circumferential sealing ring 3 is positioned in circumferential groove portion 17 and achieves a seal between the valve body 2 and the plugged-in medium connecting line.
  • the medium line has only to be pushed into gripping element 1 as far as confronting sealing ring 3 to achieve both clamping of the medium line by gripping element 1 and sealing of the medium line with respect to the valve body 2. If at this time the medium line is pulled outwardly or the gripping element 1 is moved outwardly, for example due to build-up of pressure of the medium, the inner end 10 of the gripping element 1 moves along conical surface 16, thus further tightly clamping the medium line against the pressure build-up. In any case, the gripping element and medium line will not be discharged from the valve body due to the presence of constricted portion 13. Thus, the gripping element can be moved only slightly axially outwardly during a pressure build-up or when the medium line is pulled outwardly.
  • the gripping element can have an annular ring 26 internally at the transition from the cylindrical region of the gripping element to the outwardly flared or tapered region of the inner end 10 thereof.
  • the inlet end of the valve body 2 has an attachment or projection 21 that is recessed inwardly relative to threaded region 24, and that can be tapered relative thereto.
  • Attachment 21 has formed on the exterior thereof a recess 22, the inlet end of which can be closed by a collar 23.
  • a conical clamping ring 7 is mounted within the recess 22, for example by mating screw-threads as illustrated, and is retained in the recess by collar 23 such that clamping ring 22 is undetachably mounted. As shown in FIG. 2, when the non-return valve is mounted in medium outlet 11, conical clamping ring 7 fits into a corresponding conical section 27 of outlet 11 within the distributor block 12.
  • a connecting channel 14 from an adjacent medium outlet 11 opens into conical section 27.
  • clamping ring 7 is a metallic seal blocking connecting channel 14 when the non-return valve is installed, such that the two adjacent medium outlets 11 are not connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Lift Valve (AREA)
US08/243,766 1993-05-18 1994-05-17 Non-return valve with improved line connecting mechanism Expired - Lifetime US5443091A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4316581.8 1993-05-18
DE4316581A DE4316581A1 (de) 1993-05-18 1993-05-18 Rückschlagventil

Publications (1)

Publication Number Publication Date
US5443091A true US5443091A (en) 1995-08-22

Family

ID=6488362

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/243,766 Expired - Lifetime US5443091A (en) 1993-05-18 1994-05-17 Non-return valve with improved line connecting mechanism

Country Status (3)

Country Link
US (1) US5443091A (de)
EP (1) EP0625660A3 (de)
DE (1) DE4316581A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103968223A (zh) * 2014-04-04 2014-08-06 徐州徐工铁路装备有限公司 一种活塞式加油阀

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CO7270142A1 (es) * 2013-11-19 2015-05-19 Serinpet Ltda Representaciones Y Servicios De Petroleos Válvula cheque con masa inercial para bombas de cavidades progresivas

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189046A (en) * 1962-11-09 1965-06-15 Nuclear Products Company Poppet check valve
US3605808A (en) * 1969-06-23 1971-09-20 Robert M Fisher In-line externally adjustable flow control and needle valve assembly
US4005883A (en) * 1974-08-05 1977-02-01 Guest John D Tube couplings
US4396035A (en) * 1981-06-05 1983-08-02 Whiting Oilfield Rental, Inc. Back pressure valve
US4453569A (en) * 1982-03-15 1984-06-12 Symmons Industries, Inc. Check valve with inspection means
US4532958A (en) * 1982-09-30 1985-08-06 Hudson Engineering Company Check valve having replaceable valve assembly
US4685706A (en) * 1985-03-04 1987-08-11 Clevite Industries Inc. Releasable push-to-connect tube fitting
EP0314969A2 (de) * 1987-11-05 1989-05-10 DROPSA S.p.A. Block für eine Reihe von Luft-Öl-Progressivverteilern
EP0379655A2 (de) * 1989-01-25 1990-08-01 Festo KG Verbindungsvorrichtung
EP0462079A1 (de) * 1990-06-12 1991-12-18 Ministero Dell' Universita' E Della Ricerca Scientifica E Tecnologica Schnellkupplungselemente zum Verbinden von Rohren

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7225979U (de) * 1973-12-20 Bosch R Gmbh Rückschlagventil
US4091839A (en) * 1974-08-05 1978-05-30 Deltrol Corp. Ball check valve
FR2666653B1 (fr) * 1990-09-11 1993-08-13 Marelli Autronica Sa Circuit electronique de mesure comportant des moyens d'alimentation electrique controlee d'une sonde resistive.

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189046A (en) * 1962-11-09 1965-06-15 Nuclear Products Company Poppet check valve
US3605808A (en) * 1969-06-23 1971-09-20 Robert M Fisher In-line externally adjustable flow control and needle valve assembly
US4005883A (en) * 1974-08-05 1977-02-01 Guest John D Tube couplings
US4396035A (en) * 1981-06-05 1983-08-02 Whiting Oilfield Rental, Inc. Back pressure valve
US4453569A (en) * 1982-03-15 1984-06-12 Symmons Industries, Inc. Check valve with inspection means
US4532958A (en) * 1982-09-30 1985-08-06 Hudson Engineering Company Check valve having replaceable valve assembly
US4685706A (en) * 1985-03-04 1987-08-11 Clevite Industries Inc. Releasable push-to-connect tube fitting
EP0314969A2 (de) * 1987-11-05 1989-05-10 DROPSA S.p.A. Block für eine Reihe von Luft-Öl-Progressivverteilern
EP0379655A2 (de) * 1989-01-25 1990-08-01 Festo KG Verbindungsvorrichtung
EP0462079A1 (de) * 1990-06-12 1991-12-18 Ministero Dell' Universita' E Della Ricerca Scientifica E Tecnologica Schnellkupplungselemente zum Verbinden von Rohren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103968223A (zh) * 2014-04-04 2014-08-06 徐州徐工铁路装备有限公司 一种活塞式加油阀

Also Published As

Publication number Publication date
EP0625660A2 (de) 1994-11-23
EP0625660A3 (de) 1995-03-15
DE4316581A1 (de) 1994-11-24

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